Lock for fire-arms



(No Model.) 2 Sheets-Sheet 1. P. A. ALTMAIER.

LOOK FOR FIRE ARMS. No. 261,802. Patented July 25, 1882.

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LOOK FOR FIRE ARMS.

Patented July 25 '1882.

(No Model.)

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UNITED STATES PATENT OFFICE.

PETER A. ALTMAIER, OF HARRISBURG, PENNSYLVANIA.

LOCK FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 261,802, dated July 25,1882.

Application filed May 10, 18872. (No model.) 7

T 0 all whom it may concern Be it known that I, PETER A. ALTMAIER, acitizen of theUnited States,residing at Barrisburg, in the county ofDauphin and State of Pennsylvania, have invented certain new and usefulImprovements in Fire-Arms, of which thefollowingis a specification,reference being bad therein to the accompanying drawlngs.

My invention has relation to breech-loading fire-arms; and its object isto provide a gun that cannot be discharged through carelessness oraccident, but which, under proper conditions, may be readily fired; andto that end the novelty consists in the construction of the same, aswill be hereinafter more fully described, and particularly pointed outin the claims.

In the accompanying drawings similar letters of reference indicate likeparts of the invention.

Figure l is a side elevation of my improved gun; Fig. 2,a top plan viewwith the top plate removed; Fig.3, a longitudinal section through one ofthe barrels and the lock, showing the parts in cocked position; Fig. 4,a similar view through the center of the gun and lock. Fig. 5 is asectional view of the parts after firing. A is the stock, to which arehinged the barrels B.

G is the locking-bolt, located in the stock A, so that its beveled endcengages in the recess a in the barrels B. This bolt 0 is forced forwardby the spring 0, so as to normally hold the beveled end a into therecess a.

A plate, D, is hinged to the shaft d, which extends through the sideplate E, where it is provided with a thumb-lever, F, so that a downwardpressure on the lever F will withdraw the plate D backward. Through thecenter of this plate D the head 0 of the bolt 0 extends, and a portionof the rim of the hole in the plate enters the notch e in the bolt 0, sothat when the plate is withdrawn the bolt 0 is also withdrawn, whichallows the breech to be opened for loading and unloading.

The central firing-pins, b b, are of ordinary construction, their rearor hammer ends passing through orifices in the plate D, so that they maybe properly acted upon,iu the actof firing, by the hammers.

G G are the hammers, both mounted on the shaft 9, secured between theside plates, E E, so as to play backward and forward, the hammer G beingoperated by the mainspring H and the hammer G by its mainspring H. Thelower part of the hammer has a detent, t',into which the front end, k,of the trigger K enters, so as to hold the hammer cocked.

A dog, L, is mounted on the shaft 9, be-

tween the hammers G G, and its arm lextends rearward to the base of thesafety-trigger M, while its lower part projects down so as to form atooth. l, which engages in a detent, m, in the trigger K. A spring, N,one

end of which is secured to the plate D, extends back so as to press uponthe arm I, and at the same time serves to force the plateD forward inits normal position. This spring Nin pressing upon the arm I forces thetooth 1 into the detent m. In this position the trigger K is securelylocked, and it is impossible to operate the hammer G so as to fire thegun until the trigger K itself is unlocked. To do this thesafety-trigger M is pressed back. This mo- 7 tion causes the arm I toride upon the incline n. In this position the tooth Z is withdrawn fromthe detent m, thus unlocking the trigger K. Then it may be pulled, thehammer, released,

striking the pin 1) and exploding the cartridge. 8o

Upon releasing the pressure on the safetytrigger M the spring N restoresit to its normal position by pressing the arm 1 down, and at the sametime the tooth l is forced into the detent m, thus locking the trigger Kand preventing its operation till released by the safety-trigger M. Thisdog L is provided with two teeth, I and 1 the latter operating, in asimilar manner to thatjust described, with the trigger K of the hammerG. 0

A shaft, 0, secured between the side plates,

E E, extends through the plate E, and is provided with a thumb-lever, P,located alongside of and partially under the locking-bolt lever F, sothat in operating the lever F the lever 5 P is also operated; but thelever P may be operated without afl'ecting the lever F.

To the shaft 0 are secured two dogs, 0 0, so arranged as to operate onthe rear parts, p p, of the hammers G G, whereby a downward pressure .onthe leverP willforce the hammers back, or cook them in a position forfiring.

When the lever P has been pressed down to cock the hammers a smallspring, 8, secured to the inner side of the plate E, returns it to itsnormal position.

It will also be seen that by pressing down the lever F to withdraw thebolt 0 the plate D, in moving backward, forces the hammers back, so asto cook them. Therefore the lever P performs the double function ofunlocking the barrels and cocking the gun; and when the said lever isoperated the spring N is forced back and down upon the arm 1, so as topress its end into a notch, t, in the safety-triggerM. This looks boththe hammers and the triggers at the same time, and it is impossible tofire the gun, intentionally or otherwise, as long as the arm Zis pressedtightly into the notch 25. Of course when the lever F is released theplate D and spring N resume their normal positions, and either or bothbarrels may be discharged by lirst pressing the safety-trigger, and thenpulling one or both of the main triggers.

From the above description it will be seen that under OXtllllELl ycircumstances the gun is absolutely safe, and all danger of accidentalor premature discharge obviated. At the same time, the hammers beingconcealed in the stock, the appearance and facility in handling the gunare greatly improved.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States,1s-- 1. In a breech-loading fire-arm, the pivoted plate D, secured toand operated by the shaft of the side lever, F. the locking-bolt G,extending through said pivoted plate, so as to be withdrawn by thelatter, and the hammers arranged in the rear of said plate, so as to becocked by the same, substantially as described.

2. The combination of the hammer, thetrigger,and the locking-dog L, thelatter mounted on the same pivot with the hammer and pro' vided with apoint which engages with a detent in the trigger to hold the latter inengagement with the hammer, and a rearwardextending arm resting upon andoperated by a secondary trigger, M, and a spring, N, to press said partsinto engagement, all arranged and operating substantially as set forth.

3. In a breech-loading fire-arm, the side lever, I its rock-shaft, theplate D, rigidly secured thereto, and locking-bolt (J, in combinationwith the lever P, and its shaft provided with the arm 0, and thehammers, arranged substantially as described, whereby the hammers may becocked independently by the lever 1?, or the barrels unlocked and thehammers cooked by the let'er F, at the will of the operator.

In testimony whereof I affix my signature in presence of two witnesses.

PETER A. AL'IMAIER.

Witnesses:

J. (J. MGALARNY, J. P. MELICK.

